mertzanqie lsy of new



Jan. 13, 1931. A. M. MERTZANOFF AUTOMATIC REGULATING DEVICE FOR BOILERS Fild July 27, 1928 INVEN TOR. 8

in val ATTORNEY.

Patented :Jari. 13, 1931 Anti tam. MEarz-AnorrQo NEW YORK; N. Y., issmmggtp memm nAnIAroR oo P'ANr, orf' 'iEwYoRK, 1\T.QY. .A coaro tn'rron ornnw JER EY ."z uroma'rrc max mum-D mn no.3 norrinrts 5 F 5 Application filediJ uly 27,

i. My invention. relates to improvements in regulating means forlheatlng apparatusv and the same has fori-its' "object to provide a 'sim-'v ple, 'efiicient' and reliable automatic 'device 1 for controlling thejo'perat'ion-of damperstov regulate'the rate of: combustion in a boiler. Further, Sflld-lllVGIltlOIl has for1ts'obgec't V v to provlde,a'devlce'forrned as a un1tary structurevvhiclrmay be secured directly to-a steam heating boiler;

Further,; said to :seal the opening ina boileiyandwhich -ciatedparts. I

Further, lsaid invention hashfor its obj ect to provide a unitary device Whose fpressurew 2.0 responsive element is adapted "to- OX DGDdu through an aperturein the boiler and into.

v the fluid space thereof, and inwhich the sup port,- for i said pressure responsive-element serves as' a cover plate to seal theireceivingn i 25; iperture of the boiler. V

Further, said-invention has for object toprovide a device of the character specified in Which the eXpansible-collapsible element,

the supporting cover-plate therefor, the op-- goaii ratinglever a'nd'i'ts support, and the actuatin'g element interposed between said ex 7 pansible-collapsible element and said operat? I "ing-leverr are all formed as a unitary struc-' ,ture to facilitate the easy attaching to, or

i I35 vircrnoval of the deviceiroin a boiler or heating apparatus. Y

'Gther objects will in part be obvious and in part be pointed out,hereinafter.

Tolthe attainment'of the aforesaid objects aotzandends iny invention consists. in-the novel features of "construction, and in the'combinati0n,connection, andarrangelnent of parts hereinafter more fully described, g then pointed out in the claiin. i

' ,Inthe accompanying drawingsf Figure 1 is a sideelevation of a domestic steam heating boilerequipped with oneforin' of're'gulating device" constructed according .toand embodying 'rny said invention;

'50 'Fig. 2' is an enlarged detail'central sec 7 g V invention has for its object to provide a unitar'yjdevice cons1st1ng1es-- r sentially of a coverplate'vvhich isqadapted also serves as agsuppcrt'or carrier for the r pressureresponsivewelement and its. asso-H V g l r is PIOVlClGCl-Wltllfifl; annular: recess 19, and

opena d terminatin 1928. Serial N6 295,648.-

= In said drawings, 10. designates a; sectional steamiheating boiler of the type generally I used for domestic heating purposes. ,The Y boiler is provided at its frontith theusual openings provided' vlth-doors 12, and at -the rearoi the'iback' section with a sinolieliood 13 having a checkqdaniper l4, and at the base or said rear .section,;With a mainair inletifi having"a h'inged door orAdam erl'G,

"The-rear section of the boiler is provided at its'top or upper portienwith-an aperture 1-? into which is fitted an automatic pressureresponsive', device 18. The. said aperture 17 post or' supportfld havingaclosed upper,

end rovide'd; ith,.-a,reduced enino' 25,

andlaterallyiextendinggbeari by embers 251 ith1n;,wh1ch s I plvote-lly ;s -upp o v crating, leverffiijiwh ch is operativ cena nected atone end with said check daniper 1 4 and iyi-th saidfniain air rinlet door or damper 16byarod 28,] {The tubular'post 24; is pro:

portion 2% to receive a'suitabletool or wrench for securing. s'aid'postgc in thecover plate 21, 29' denotes; a1 'exp 'nsible collapsible elment',=' pre;i erab thefo-rrn of a transversel -v corrugated met ,yessjel; having; a closed inner ;endiprovided' upen inner "side I 'a;:threadedboss 30, andhaving its outerg end 7 ing integral flange 3f adapted to. extend into and r-es't; upon;the; recessed portion l9" of the aperture gl7fin the boiler.

.32 denotes-bolts Whose heads are loosely engaged by the bifurcated H members :20 of theb-oilenf Thethreadedupper ends of said'me,

85. p vldedjlntern ed-iate; its ends w th a polygonal in a laterally-p j t I I collapsible element 29. The sa d stem 351sp ro'vided wi'thin' the tubular p'ost'2 l with a' shoulder 36, and atits projecting portionpansible collapsible clamped in position between the under side of the annular rib 23 of the cover bolts extend through suitable apertures in the cover plate 21 and are provided with nuts 34, which, when screwed down, serve to secure the cover plate 21 firmly in place to seal the aperture 17 in the boiler, and at the same time secure the flange 3'1-of the 'ex'- element? 29 firmly V plate and the" recess 19 ofth'eopening 17.

denotes stern'lntvingitsirfni end:

threaded and secured within the threaded boss 30, and its other endeiit'endi'ng pwaraiy within said expansible-col-lapsibleelement and through the cover plate 21 and hollow post 24, and hasits freeend, which-projects out of said hollow post, adaptedto'engage with the under 'sid'e of said operatinglevr 27 when said stem 35 is actuated-by the vconn- :.:1re'ssin'g or collapsing ofthe' expansible with a 'trans'versepin 37, which shoulder and 5.; pin serve asstops to limit t'hecoll'apsing-and 'free end and pivoted portion with a counter expanding movements "of the ex pansible collapsible element 29 of'the stem" 30 in response to pressure variations, obtaining within the fluid space of the boiler.

The lever 27 is provided intermediate its weight 38 which is adjustably secured in position by a lock screw 39'. The operation of the apparatus will-be- 5 obvious from the foregoing specification; It

jecting'end thereof engage'the under 'sid'of the lever 27 between its free end-and the" pivoted support'there'for, and raise said end;

and accordingly depress its" opposite fend; thereby causing the. rod 28fi'to' descend-and close the draft-inlet door-16 and'bpen the" what I claim and desire to Patent is: The combination of alheating apparatus havingan opening therein provided with an annular recess and communicating with the flu d? space of the-heating apparatus with a regulating "device comprising a cover plate, an annular rib on the under side of said cover plate,r a tubular support. on saidcover plate 1 and 'entending outwardlytherefrom', a lever pivotallymounte'd "on said tubular support, an e pansible-collapsible vessel having a closed mevabl'e'inn'eren'd, and a laterally extend ng flangeat its "outer end supported w thin the annular reces's of the opening in sa d heating" apparatus,-" means for securing said cover pl'ate' to the heatingrapparatus' in position over theopeni-n-g thereinaridclampsecure by Letters ing the 'l'aterally extending flange of said expan's ible coll'apsible element between the annular rim on'said cover plate and the base of the annular recess surrounding said opening, a, stemhaving" one end extending-into said expansibl'e collap'sible element and se-' cured to the closed movable end thereof; and having its other end extending outwardly through said expansible collap sible vessel and through said tubular support and adapted for-engagement with said lever whereby to actuate the 'samein' response to changes in thermal conditions obtaining w'ithin th'eflui'd space 0f the heating apparatus,'-an'd stops onsaid stem adapted to'eng'a'gewith the'oute'r en'd of;saidtubularsupp'ort for limiting'the EXQdUISIOH' of said stem,substantially-as Speci 1 o o g j 'Signed-'at thefcity' of'New York, in the countyand Statejof New York, this 22nd day of'June, :one" thousand nine hundred and twenty-eight. i ANDRE M'ER-TZANOFFQ I check damper 14; in the-smoke hood- 13v When the pressure within the'boilefragain" decreases in response to'a'dec're'ase'in the'teinperature of the water due to the reduced rate of combustion,"the opposite operation from o thatabove described will takepl a'ce:

1 It is to be noted particularlythat my-pres sure responsivedevice, i. e., thepart-s coinboilerby merely manipulating the bolts '32;-

and that thesaid bolts' 32simultaneously. serve to secure the coverplan /21' jin'pla'c'eto" seal the opening 17 in the boiler,and to'secure prising the cover plate 21, expansi'ble-collap -sibleelement 29fst'em 35, and suppbrt 24ers combined as a unitary structure and 'may,

as such, beaaached to, or'remjove'd from the i the expansible-'collajosible element 29 in pov sitionwithin'the openingl? in'th'e' boiler;

e Having thus-described 'said invention; 

